I would like to suggest Caltrops get the marksman tag.
When the rogue uses the skill they end up holding the bow or crossbow, which makes me think that the damage is based off range damage instead of melee.
Dash Is considered cutthroat and shadow step is also cutthroat, it would make sense to tag caltrops as marksman.
Adding the marksman tag to caltrops could open up more build diversity and the ability to use more aspects with the skill.